大管轮轮机英语综合(33-48期)(7)

大管轮轮机英语综合

128． In the engine department, the______ is looked upon to provide the leadership that is needed.

A. captain B. chief engineer C. chief officer D. chief motorman

129． The value of GM still remains one meter, meanwhile we can pump the ballast water

to______ the ship on even keel.

A. make B. put C. keep D. get

130． Under the provisions of applicable international conventions, ships entitled to fly the flag of a

Party are subject, while in the port of a Party, to control by officers duly authorized by the Party. Ships of non-parties or below convention size shall be given______. A. more favorable treatment B. less favorable treatment

C. no more favorable treatment D. the most favorable treatment

131． If you burned your arm on a bare steam line, the most effective immediate treatment would

be to ______.

A. wrap the arm in a tight bandage B. soak the arm in hot salt water

C. cover the burn with petroleum jelly D. put the burn in cold water

132． When entering a foam injected space ______ breathing apparatus.

A. put out B. put on C. take off D. take in

133． The fire of electrical equipment is classified as ______ fire.

A. Class A B. Class B C. Class C D. Class D

134． If liquid refrigerant accidentally comes in contact with the eyes, ______ immediately.

A. rub the eyes B. irritate the eyes

C. wash the eyes with a heavy boric acid solution D. obtain medical help

135． Administrations should bear in mind the significance of ______ in maintaining safety of life

and property at sea and in preventing marine pollution. A. advanced nautical equipment

B. advanced performance main engines C. emergency equipment

D. communication and language skills

136． The International Sewage Pollution Prevention Certificate shall be issued for a period

specified by the Administration, which shall not exceed ______ from the date of issue． A． six months B． one year C． three years D． five years 二、关联题（每组关联题题干下有4个小题，每小题4个选项） 第一组：

The cooling water in the HT(high temperature) circuit cools the cylinder liners, cylinder heads

and turbocharger. From the pump water is supplied to the engine manifold which is cast in the engine block. From the manifold the water is distributed to all cylinder liner sections and from each liner upwards through the cooling water channels in the liner collars. From the liner collars further into the cylinder heads. In the cylinder head the water is forced by an intermediate deck to flow along the flame plate, around the valves to the exhaust valve seats and up along the fuel

injector sleeve. From the cylinder head the water is discharged via a connection piece into the discharge manifold.

The return water from the cylinder heads and turbocharger is supplied to the HT air cooler. In the first stage of this cooler, most of the heat from the charge air is extracted.

The LT circuit water cools the charge air in the second stage. The necessary cooling for the LT water is gained from a central cooler. By controlling the LT water temperature to the inter-cooler the correct charge air temperature can be obtained.

For preheating purposes, a heater circuit with a pump and heater are connected in the HT circuit before the engine. Before starting, the HT circuit is heated till about 60℃ by a separate heater The pre-heating of the engine is, prior of starting up and loading on HFO, of utmost importance.

137． From the passage we know that the charge air temperature was controlled by _______.

A. sea water from a central cooler B. fresh water from a central cooler C. fresh water from a HT circuit D. fresh water from the LT circuit

138． The cooling water to cool the engine was forced ______.

A. into the cylinder block and then upwards into the cylinder head

B. into the cylinder intermediate section and then upwards into the cylinder head C. into the cylinder head and then downwards into the cylinder block D. into the cylinder ends and then further into the cylinder intermediate 139． After the charge air is discharged into the HT air cooler, _____.

A. the charge air temperature will become higher B. the charge air temperature will become lower C. the HT water temperature will remain constant D. the HT water temperature will become lower

140． Which of the following devices may be used to warm the engine prior to starting?

A. A high temperature cooling water system. B. A low temperature cooling water system. C. A central cooler.

D. The second stage cooler. 第二组:

Combustible gases and vapours, such as petroleum vapour, when mixed in the correct proportion with air in an enclosed vessel will burn so rapidly that an explosion occurs. The

burning can be initiated quite easily, ignition often being caused by a relatively small spark. For each gas or vapour there is, however, an upper and lower concentration of vapour in air between which an explosion can occur. These limits are referred to as the lower flammable and upper flammable limits (LFL and UFL) or, alternatively, the lower and upper explosive limits (LEL and UEL). Petroleum vapour for instance, has an LEL of 1.4% and a UEL of 6.4% while hydrogen has an LEL of 4% and a UEL of 75%. Crude oil contains a variety of hydrocarbon mixtures and the vapour contained in crude oil tanks will exhibit a wide variety of upper and lower explosive limits.

141． Which of the following statement is not true?

A. Ignition energy of combustible vapours is small. B. Combustible gases are easily burned.

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